21034154222 has 8 divisors (see below), whose sum is σ = 31558381272. Its totient is φ = 10514693800.

The previous prime is 21034154221. The next prime is 21034154263. The reversal of 21034154222 is 22245143012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21034154191 and 21034154200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034154221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1180604 + ... + 1198287.

It is an arithmetic number, because the mean of its divisors is an integer number (3944797659).

Almost surely, 2^21034154222 is an apocalyptic number.

21034154222 is a deficient number, since it is larger than the sum of its proper divisors (10524227050).

21034154222 is a wasteful number, since it uses less digits than its factorization.

21034154222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383314.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 21034154222 its reverse (22245143012), we get a palindrome (43279297234).

The spelling of 21034154222 in words is "twenty-one billion, thirty-four million, one hundred fifty-four thousand, two hundred twenty-two".